Which is a secondary disturbance A.Snow melting B.Volcanic eruption C.Forest fire D.Tree falling?

In what ways do the characteristics of today and farm animals such as cattle pigs and chickens differ from those of earlier farm animals What are the reasons for the differences? Where is kaziranga national park located? What sound do audience make? What are thetwo different ways by which animals gives birth to their babies? What are animals that just eat plants? Where do animals who moults their skin leave it? How high can a ladybird fly? What do you mean by the term tonoplasm? What is the Little Animals Activity center? What is the difference between a mussel and a whelk? What is the biggest danger for bats? How is the uboat dangerous? What are the effects of agricultural activities on ecological systems? What about Timbuktu impressed Leo Africanus? What is an animal that no one else hardly knows? Convert from liquid to pill 1 ml vs 100 mg? How is a wombat backwards facing pouch helpful to a burrowing animal? How would life be without fossil fuel? What does a parameicum eat? Example of harmful invertebrates?

Which is a secondary disturbance A.Snow melting B.Volcanic eruption C.Forest fire D.Tree falling?